1 files changed, 42 insertions, 0 deletions
diff --git a/FanController/fan_controller/median.h b/FanController/fan_controller/median.h
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+/* Autor: Ján Sučan <jan@jansucan.sk>
+ * 
+ * Zdrojove kody, ich casti a subory z nich vzniknute priamo alebo nepriamo
+ * (objektove subory, Intel Hex, ...) prosim nepouzivajte komercne, ani ako
+ * sucast komercnych diel. Vsetky ostatne pripady pouzitia su dovolene.
+ *
+ * Please don't use the source codes, their parts and files created from them
+ * directly or indirectly, (object files, Intel Hex files, ...) for commercial
+ * purposes, not even as a part of commercial products. All other use cases
+ * are allowed.
+ */
+
+#ifndef MEDIAN_H_
+#define MEDIAN_H_
+
+#include <stdint.h>
+
+/** Minimalny pocet vzoriek pre vypocet medianu. */
+#define MEDIAN_MIN_SAMPLES 3U
+
+/** Maximalny pocet vzoriek pre vypocet medianu. */
+#define MEDIAN_MAX_SAMPLES 16U
+
+/** Vzorka pre median. */
+typedef struct {
+	uint16_t value; /**< Hodnota vzorky. */
+	uint8_t age_index; /**< Index do FIFO age v bufferi medianu.  */
+} median_sample_t;
+
+/** Buffer pre vypocet medianu. */
+typedef struct {
+	uint8_t number_of_elements; /**< Pocet aktualne ulozenych vzoriek. */
+	uint8_t capacity; /**< Maximalny pocet ulozenych vzoriek. */
+	median_sample_t samples[MEDIAN_MAX_SAMPLES]; /**< Vzorky z ktorych sa pocita median. */
+	uint8_t age[MEDIAN_MAX_SAMPLES]; /**< FIFO. Na indexe 0 je index najstarsej vzorky v poli samples, na indexe 1 je index druhej najstarsej, atd. Pouziva sa pre rychle najdenie najstarsieho prvku. */
+} median_buffer_t;
+
+void median_init_buffer(median_buffer_t * const buf, uint8_t capacity);
+void median_save_sample(median_buffer_t * const buf, uint16_t sample);
+uint16_t median_get(const median_buffer_t * const buf);
+
+#endif /* MEDIAN_H_ */
+\ No newline at end of file